STUDY ON THE UNEVEN GROUND PRESSURE IN PITCHING OBLIQUE UNDERHAND MINING
俯伪斜分段密集支柱采煤法缓和急倾斜煤层矿压显现不均匀现象的研究

Based on the study of ground pressure in mining face and roadway through experiments in site and model testing in lab,the behaviors of ground pressure are compared for the pitching oblique underhand mining and straight long-wall mining. The reasons of uneven ground pressure are obtained for pitched oblique underhand mining. Meanwhile,the adaptable parameters in mining face of pitching oblique underhand mining are discussed,and they could be used for the control of ground pressure and optimum design.